puzzle consists of two identical components that screw together.
It is made of nylon by selective laser
sintering. The name comes from
Plato's association of the tetrahedron
with the classical element of fire.
I made 100 of these as my IPP28
Separately, the pieces look like
this. It is tricky to put them together.
The solution is that you start
assembling the two pieces like this, then screw them together.
is the description page that was
printed in the IPP28